MreB Perturbing Compound A22 hydrochloride（Cat No.:R065111）is a small-molecule inhibitor that targets MreB, a bacterial actin homolog essential for maintaining cell shape, polarity, and cell wall synthesis. By binding to MreB, A22 disrupts its polymerization and dynamics, leading to defects in cell morphology, growth inhibition, and eventual lysis. The hydrochloride salt form improves solubility and handling for laboratory applications. A22 is widely used in microbiology and antibiotic research to study cytoskeletal function in prokaryotes and to explore novel antibacterial strategies targeting cell shape–determining proteins.